import unittest


def add(a, b):
    return a + b


class UnitTest(unittest.TestCase):
    def test_add(self):
        self.assertEqual(add(1, 2), 63, "测试1")

    def test_add2(self):
        self.assertEqual(add(1, 2), 2, "测试2")

    def test_add3(self):
        self.assertEqual(add(1, 2), 3, "测试3")

    def test_sub(self):
        self.assertEqual(add(1, 5), 6)


if __name__ == '__main__':
    unittest.main()
